I have a question regarding using Simulation for analysis of a circular disc. The model is fixed at the innermost polygon surface. A tangential load at the thru hole is meant to rotate the disc and transfer torque to a shaft through the polygon surface.

What is the best way to apply this tangential load in simulation.

1. Should I apply it as a normal force tangential to the disc?

2. Should I apply it as a torque about an axis thru the center? If yes, should I apply a counter force at the center to compensate for the reaction force?

I appreciate the help.

Regards,

Bala